Book of Ways, the feeling of strings, is a one-in-a-kind double album of improvised music performed by Keith Jarrett on clavichord recorded in July 1986 and originally released by ECM Records in 1987.

"Extraordinary" – the BBC

"Jarrett occasionally tries to stretch the instrument's limited possibilities, hammering percussively on the close-miked strings. Yet for the most part, Jarrett reins in his world-class technique in order to make unpretentiously minimal music on this ancient keyboard. Some of it sounds like folk music, some like new age contemplation, there are convincing neo-baroque musings, and a few of these untitled though numbered selections kick into a higher gear. Sometimes this music is charming; a lot of the time, it gets wearisome. But hey, they also laughed when Keith started putting out massive sets of solo piano..." – Allmusic